Degradation of Textile Dyes by Nonthermal Plasma Process

 

Dye Removal

With cavitation plasma reactor its a possibility of zero discharge of dyes and regeneration of a washing solution by degrading desorbed dyes in a washing solution using an advanced oxidation process (AOP). Among several AOPs, such as Fenton-, UV-, ozone-, and cold plasma (CP)-based AOPs, CP treatment is known to offer strengths such as higher oxidation potential, lower energy consumption, and shorter treatment time at room temperature and atmospheric pressure independently of the content of organic foulants, pH, and turbidity, unlike other AOPs. The higher oxidation potential stems from reactive oxidizing species, including several radicals, such as O2·, OH·, HO2·, or their recombination, capable of non-selectively oxidizing various materials, which is also expected to be effective in degrading methylene blue. Moreover, CP treatment can be applied to the existing infrastructure without installing additional reactors. 

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Whenever a used washing solution was treated with CP/cavitation treatment, most of the desorbed dyes in a washing solution were degraded quickly, regenerating the used washing solution successfully.

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